When Tess volunteers at the local senior center, she discovers that a few of the members aren't very nice. They fight about everything or cruelly make fun of others In fact, there are a couple who rankle just about everyone. When the nasty old biddy Edwina is poisoned, everyone seems more relieved than upset. Tess tries to find the murderer and starts with a very long lists of suspects.
I like Tess and the narrative is solid. There are a few point of view shifts that aren't very smooth, but overall it's an easy read.